XYplorer Beta Club

It seems I remember an option for a small/thumbnail type preview when the mouse cursor hovers over a file's icon, but I cannot find where to activate/deactivate this.
Was it just a dream or is there such an option?

It's a plan: MOBU = Mouse Over Blow Up.

Thank you for reply. Guess it was a dream, strange... anyway, I think I will leave a link to your roadmap on my desktop.